While researching a topic, a student has taken the following notes:
<ul> <li>Quartz is one of the most common minerals on Earth.</li> <li>Chemically, it is silicon dioxide (SiO2).</li> <li>It forms hexagonal crystals.</li> <li>It is used in jewelry, electronics, and timekeeping.</li> <li>It rates 7 on the Mohs scale of hardness.</li> </ul> The student wants to introduce quartz to an audience unfamiliar with it. Which choice most effectively uses relevant information from the notes to accomplish this goal?Which choice most effectively makes the student's point?
- A
Quartz is used in jewelry, electronics, and timekeeping.
- Bcheck_circle
Quartz, chemically silicon dioxide (SiO2), is one of the most common minerals on Earth.
- C
Quartz forms hexagonal crystals.
- D
Quartz rates 7 on the Mohs scale of hardness.
Explanation
An introduction defines and gives the broad identifier. Choice B names quartz, gives its chemical identity, and notes its commonality. The others give properties or uses without identification.